Strainer



Dec. 20, 1927.

' 1,653,214 P. KEMPTER STBAINER Filed March 26. 1926,

I will BY INVENTOR. I: aw, M M

A TTORNEYS Patented Dec. 20, 1927.'

UNITED STATES PATENT OFFICE,

PHILIP KEMPTER, OF MILWAUKEE,- WISOONSIN', ,ASSIGNOB TO'GEUDER PAESCHKE &

FREY COMPANY, OF MILWAUKEE, WISCONSIN A CORPORATION OIWISCONSIN.

v STRAINER.

I n neat on ai d Marches, 19:26; Serial na'smss.

This invention relates to improvements in, strainers, and more particularly tothose of the type now commonly employed for straining milk as the same is poured intothe large cans for shipment V i One object oftheinvention is to provide a strainer of-the character describedwhich shall-possess certain advantages over those heretofore used, these advantages gbeing threefold; first, the, speeding up of the straining, second, the providing against aceidental displacement of that, partof the strainer commonly referred to as the cap and third, the rendering of the strainer much easier to clean.

Various other objects and advantages will appear from the following specificat on taken in connection with the accompany ng drawings wherein one form of the inventlon is illustrated. g

In the drawings:

Figure 1 is a side elevation of the'upper' portion of a milk can,,showing astrainer constructed in accordance wlth the. present invention operatively positioned therein,a 7

portion of the can being broken awayanda portion of the strainer being insectionlin order to better illustrate'the constructlon; Fig. 2 is a section on line 2+2ofF1g. 1; and

fastening the cap of the strainer in-position.

Referring more in detail to the drawings:

the'strainer as shown comprises a bowl 10 preferably of sheet metal-and provided with a rolled edge 11 surroundingthe upper end thereof. A cuplike element 12 provides a lower extension for-the bowl in the form of" a restrietedneckl the bottom wall 14 of the cup being provided vwith a series of spaced apart'slots 15 preferably arranged in parallel relationsubstantially as shown, The

I ,which latter bear-reference character. 18,-is'

cup 12 is-provided with a fiange 'ltidsurrounding its upper open end and this flange 16 engages and overhangs the adjacent wall of bowl lO'and is soldered thereto. 7 I

A cap 17 the bottom of .whichis also provided with a plurality'of spaced apart slots,

adaptedtoxrbe fitted or telescoped upwardly over the restricted neck 13 andito clamp between, theslotted Wallsa section of suitable 'eral legof Figs. 3 and l are detail views illustrating the improved bayonet jointemployed for preferably spot welded. or:

filtering material 19 which maybe in the form of a pieceof cloth or the like; Bayonet joints 20 of special construction serve to hold the cap in position and to prevent accidental displacement thereof. The stud of each o greatest in the vertical leg of the groove and more especially at the top end thereof, orat the point where the stud 21 first engages the groove in fitting the cap over the restricted neck portion of the strainer. From this point each groove gradually lessens in depth, this lessening continuingthroughout the latthe groove until said groove at its extreme inner end merges substantially into the regular contour, of cap substantially flush therewith. As shown bling the, cap on the lower end ofthe strainer, the filtering cloth orothero material 19 is first placed therein over the slotted bottom wall thereof and the cap is then moved upwardly overthe restricted neck 13 in such position that studs 21 may readily engage the vertical legs of" grooves 22. The up-, "ward movement of the cap is then continued until the studs 21engage the upper wall of the lateral legs of the bayonet grooves, whereupon the cap is turned in the usual manner until the ends of the studs bind firm- 1n the laterallegs of the grooves due to y the gradual decreasing depth of said grooves as previously described. The downward incllnation of the laterallegs of the bayonet grooves, it will be observed, cooperates with the studs 21 during this rotative movement of the cap and'servesto draw the cap upwardly, bringing the slotted bottom thereof The other member of the side wall of the the lateral legsof the bayonet grooves are slightly ,inclined downwardly. In assemnto firm clamping engagement with the slotted wall 1 1 of the restricted neck portion. In thismanner, and due to the construction described, a very firm andsecure connection between thecap and; the restricted neck portion vof the strainer 1s assured,'and one which elitirely precludes the possibility of accidental displacement of the cap, such as heretofore frequently occurred. This sometimes occurred when the strainer was in position in the milk can, the cap dropping down into the can and frequently this is not discovered by the attendant until after the can has been filled.

The bayonet joints are preferably so arranged as topresent the slots in the bottom of the cap 17 at substantially right angles with respect to those in the bottom wall 14' of the neck portion 13 of the strainer when the cap has been moved into final position.

a This relationship is shown more clearly in apertures and to provide a joint between.

the cap and neck portion intended to en.- sure alignment of these apertures when the cap was moved into position, but in practice many things interfered with the alignment of the apertures and, oftentimes, these apertures would be out of line, resulting in a material slowing up of the straining opera tion and not infrequently in complete stop page, the apertures in such case being directly out of line and the filtering material clamped firmly between the a'pertured walls so that the outlet would be entirely obstructed. As will be observed, such possibilities are entirely overcome in a construction such as herein described and illus trated, for even though the cap is not moved into precisely the same position with reference to the neck portion each timeit is reap plied thereto, there will always be a free passage through the filtering material for the liquid to be strained. It, is immaterial .in the present strainer whether or not the respective slots are precisely at rightangles with respect to each other, the desired results being obtained equally as well in any position of the cap within the range permitted by the bayonet joint. As will also be apparent, a strainer constructed as herein illustrated and described, lends itself much more readily to thorough and quick cleaning, as it is a comparatively e'asy ma'tter to thoroughly clean slottedwalls as compared to walls having a plurality of small apertures such as heretofore employed.

Int-he use of the strainer, the same is ap plied to a milk can substantially, as shown in Fig. 1 of the drawing, the milk being poured into the upper open end of thebowl 10, filtering downwardly through the lower end of the strainer and into the can. The

upper edge of the cap 17 is referably finished off by folding or ben mg the metal back upon itself, as at to forma bead or the like as shown.

While the improven'ients have been herein and the following claims be construed ac-f cordingly.

As will be readily appreciated, the improvements are susceptible of various changes and modifications Without departing from the spirit of the invention an cordingly, it is not desired to limit'or-re strictthe same except where limitations appear in the appended claims.

The invention claimed is:

1. A strainer comprising a bowl havin a restricted neck at its lower end, a slotte wall extending across said neck, and acap fitting over said neck, the bottom wall of said cap being also provided with slots, and a section of filtering material clamped be tween said slotted walls.

2. A strainer comprising a fixed wall and a removable wall, each provided with a plurality of elongated slots arranged in parallel relation, a filter pad disposed between said walls and means for ensuring the as sembly of said parts in such wise that the slots in one wall will be angularly disposed with respect to the slots in the other.

3. A strainer comprising a bowl having a restricted neck at its lower end, a slotted wall extending across said neck, a cap fitting over said neck, the bottom Wall of said cap bein also provided with slots, a sec-v tion of filtering material clamped between saidslotted walls, and means for holding saidc'a'p in posit-ion. V i. A strainer comprising a receptacle, the bottom wall of which is provided with a plurality of elongated slots arranged in parallel relation, a separate member adapted to be removably clamped over said wall and similarly provided with aplurality of elon gated slots arranged in parallel relation, a

filter pad disposed between said wall and saidmember, and means for holding said member in such osition that the slots there in extend at su stantially right angles to those in said wall,

5. A strainer comprising a bowl having a restricted neck at its lower end, a slotted wall extend ng across said neck and a cap' removably fitting 'oversaidineck, the bottom wall of said cap being also provided with, slots, a section of filtering material clamped between said slotted walls, and means for holding said cap in said arisin an an 'ular 'roove formed in one C D b of said members and a stud carried by the other and adapted to engage said groove, the latter being of gradually decreasing depth so as to bind against said stud to prevent accidental displacement.

7. A stralner comprising a bowl, having a restricted neck at its lower end, a slotted wall extending across said neck, a cap fitted over said neck, the bottom of the ca being also slotted, and means to retain t e cap in place upon the bowl with the slots of the bowl wall and the slots of the cap wall arranged transversely with respect to each other whereby to define a multiplicity of relatively small angular orifices.

8. The strainer described in claim 7 wherein a filter pad is interposed between the slotted walls of the bowl andcap.

9. A strainer comprising a plurality of plates each provided with a series of elongated slots and means to retain the plates in superposed relation with the slots of adjacent plates arranged transversely with respect to each other whereby to define a multiplicity of relatively small orifices.

10. The strainer defined in claim 9 wherein a filter plates.

In witness whereof, I hereto aflix my signature.

'PHILiP KEMPTER.

pad is interposed between said Ill) 

